The 1965–66 SM-sarja season was the 35th season of the SM-sarja, the top level of ice hockey in Finland. 12 teams participated in the league, and Ilves Tampere won the championship.
First round
Group A Club GP W T L GF–GA Pts 1. Lukko Rauma 10 63142:2515 2. SaiPa Lauritsala 10 53240:3413 3. Reipas Lahti 10 42446:3610 4. Karhut Pori 10 32532:438 5. HJK Helsinki 10 32529:488 6. Koo-Vee Tampere 10 30729:356
Group B Club GP W T L GF–GA Pts 1. Ilves Tampere 10 82053:2018 2. TPS Turku 10 61339:2913 3. RU-38 Pori 10 43335:2811 4. TuTo Turku 10 42421:2510 5. HIFK Helsinki 10 21719:435 6. Kärpät Oulu 10 11822:443
Second round
Final round Club GP W T LGF–GA Pts 1. Ilves Tampere 10 80258:2616 2. Lukko Rauma 10 52333:2912 3. SaiPa Lauritsala 10 50529:3010 4. TPS Turku 10 42427:2910 5. RU-38 Pori 10 32533:408 6. Reipas Lahti 10 12725:514
Qualification round Club GP W T L GF–GA Pts 7. Karhut Pori 10 61342:3013 8. Koo-Vee Tampere 10 52345:2512 9. TuTo Turku 10 60430:3112 10. HJK Helsinki 10 51440:3711 11. HIFK Helsinki 10 32527:348 12. Kärpät Oulu 10 20820:474
External links Season on hockeyarchives.info